Data URIs are allowed to run scripts that manipulate
pages from the site that directly opened them. In some cases, the opening site
is not correctly detected. In these cases, Data URIs may erroneously be able to
run scripts so that they interact with sites that did not directly cause them to
be opened.

Data URIs are allowed to run scripts that manipulate
pages from the site that directly opened them. In some cases, the opening site
is not correctly detected. In these cases, Data URIs may erroneously be able to
run scripts so that they interact with sites that did not directly cause them to
be opened.